Atmospheric Transmittance/Radiance Computer Code FASCOD2,

Abstract : This report continues the development of a line-by-line radiative transfer code for inhomogeneous, spherical atmospheres with refractive bending. Optical path calculations and properties for standard atmospheres are combined with the radiative transfer processes to form an integrated program. The code is then modified to include non-LTE effects on radiance and transmittance at the higher altitudes. For accurate continuum absorption near band heads, a new sub- Lorentzian form factor is developed that is compatible with the codes algorithm for line modeling. The CO2 continuum is studied as a particular example. All new computer coding and theoretical developments are documented and supported with example calculations.